i have tryed to install the chat with following this http://webgalli.com/blog/facebook-like-chat-for-elgg/

and i tryed something else but it keeps saying "is not readable"

please help me out :)

no its just telling that its not Readable so its not helping much.

Tell me where exactly are you finding this error .

I mean which step of installation did you get this error ?

it comes when you gonna set up the installing path.

That means you have set the wrong installation path .